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Primer-free blocking glue and its preparation method

A technology of barrier glue and primer, which can be applied to biocide-containing paints, coatings, antifouling/underwater coatings, etc. It can solve problems such as difficult drying, expensive manufacturing equipment, and easy mechanical scratches of AlOx/SiOx coatings

Active Publication Date: 2018-05-18
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of new materials, such as the development of AlOx / SiOx coatings, but their manufacturing equipment is very expensive, and the AlOx / SiOx coatings are easily scratched mechanically and require coating protection; another example is the development of polyvinyl alcohol (hereinafter referred to as PVOH) materials, However, due to the high viscosity of PVOH itself, it is difficult to dry on the PVDC coating equipment commonly used in the existing market, and the equipment needs to be modified.

Method used

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  • Primer-free blocking glue and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A. Preparation of PVDC emulsion:

[0035] a) Take 7kg of vinylidene chloride monomer, 1.48kg of methyl methacrylate, 0.84kg of acrylic acid, 0.3kg of methacrylonitrile, 0.02kg of sodium bicarbonate, 0.1kg of ammonium persulfate, and dodecyl diphenyl ether Sodium disulfonate 0.04kg, sodium 2-acrylamido-2-methylpropanesulfonate 0.08kg, edetate 0.04kg, deionized water 10.1kg, for use;

[0036] b) Preparation of mixed monomer and mixed emulsifier: put the prepared vinylidene chloride monomer, methyl methacrylate, acrylic acid, and methacrylonitrile in the reaction kettle, and stir evenly to make a 9.62kg mixed emulsifier. Monomer, then put the above-mentioned sodium dodecyl diphenyl ether disulfonate and 2-acrylamido-2-methyl propane sulfonate into the container, stir evenly to make 0.12kg mixed emulsifier, stand-by;

[0037] c) Initiator solution preparation: 0.09 kg of ammonium persulfate was dissolved with 1.52 kg of deionized water and set aside;

[0038] d) Preparat...

Embodiment 2

[0048] A. Preparation of PVDC emulsion:

[0049] a) Take 15.2kg of vinylidene chloride monomer, 3.2kg of methyl methacrylate, 1.54kg of methacrylic acid, 0.49kg of acrylonitrile, 0.03kg of sodium bicarbonate, 0.12kg of ammonium persulfate, dodecylbenzenesulfonate 0.06kg of sodium nitrate, 0.12kg of sodium 2-acrylamido-2-methylpropanesulfonate, 0.04kg of ethylenediaminetetraacetate, 19.2kg of deionized water, for use;

[0050] b) Preparation of mixed monomer and mixed emulsifier: put the prepared vinylidene chloride monomer, methyl methacrylate, acrylic acid, and acrylonitrile in the reaction kettle, and stir evenly to make 20.43kg of mixed monomer , the above-mentioned sodium dodecylbenzenesulfonate and 2-acrylamido-2-methylpropanesulfonate prepared above are placed in the container, stirred evenly to make 0.18kg mixed emulsifier, stand-by;

[0051] c) Initiator solution preparation: Dissolve 0.11 kg of ammonium persulfate with 3.46 kg of deionized water and set aside;

[00...

Embodiment 3

[0062] A. Preparation of PVDC emulsion:

[0063] a) Take 24kg of vinylidene chloride monomer, 4.08kg of methyl methacrylate, 2.1kg of acrylic acid, 0.6kg of methacrylonitrile, 0.04kg of sodium bicarbonate, 0.02kg of ammonium persulfate, and 2 sec-dodecylsulfonic acid 0.06kg of sodium, 0.12kg of sodium 2-acrylamido-2-methylpropanesulfonate, 0.12kg of ethylenediaminetetraacetate, 28.86kg of deionized water, for use;

[0064] b) Preparation of mixed monomer and mixed emulsifier: put the above prepared vinylidene chloride monomer, methyl methacrylate, acrylic acid, and methacrylonitrile in a reaction kettle, and stir evenly to make a 30.78kg mixed emulsifier. Monomer, then place the above-mentioned sodium dodecyl sulfonate and 2-acrylamido-2-methylpropanesulfonate prepared in the container, stir to make 0.18kg mixed emulsifier, stand-by;

[0065] c) Initiator solution preparation: Dissolve 0.11 kg of ammonium persulfate with 3.46 kg of deionized water and set aside;

[0066] d) ...

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Abstract

The invention discloses a primer-free blocking glue and its preparation method. Through adding PVOH product with better blocking property in PVDC latex, the blocking property is improved (<=2cc / m2.24hr), and the polymerization technique is further adjusted; finally, the primer-free PVDC latex is prepared; on the basis of guaranteeing good blocking effect, the film primer coating process is reduced, generation of organic solvent in the production process is avoided; besides, there is no risk of solvent residue.

Description

technical field [0001] The invention relates to a barrier glue without primer and a preparation method thereof, belonging to the field of new polymer materials. Background technique [0002] As of now, PVDC is the most widely used and used high-barrier film in the high-barrier and transparent flexible packaging industry, especially in China. Conventional high-barrier PVDC emulsions need to be coated with a primer. Currently, solvent-based primers are commonly used in the market, which produces a large amount of organic gas. As the country strengthens environmental protection supervision, flexible packaging manufacturers have devoted a lot of research and development in reducing the use of harmful materials and using more environmentally friendly materials. In terms of new materials, such as the development of AlOx / SiOx coatings, but their manufacturing equipment is very expensive, and the AlOx / SiOx coatings are easy to mechanically scratch and require coating protection; an...

Claims

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Application Information

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IPC IPC(8): C09D127/08C09D129/04C09D5/14C08J7/04C08F214/08C08F220/14C08F220/06C08F220/50C08F220/58C08F2/26C08L23/12
CPCC08F2/26C08F214/08C08F220/06C08F220/14C08F220/50C08F220/585C08J7/0427C08J2323/12C08J2427/08C08L2201/14C09D5/14C09D127/08C08L29/04C08K5/46
Inventor 朱清梅宋军军
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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